MI 3102(H) BT
Eurotest
XE
Safety and operational considerations
9
If a voltage of higher than 10 V (AC or DC) is detected between test terminals, the
continuity resistance test will not be performed.
Compensate test lead resistance before performing a continuity measurement, where
necessary.
Earth resistance - RE, two clamps, specific earth resistance (
)
If voltage between test terminals is higher than 30 V the resistance to earth
measurement will not be performed.
If a noise voltage higher than approx. 5 V is present between the H and E or S test
terminals,
“
” (noise) warning symbol will be displayed, indicating that the test result may
not be correct!
For two clamps earth resistance measurement clamps A 1018 and A 1019 should be
used. Clamps A 1391 are not supported.
For specific earth resistance measurements
Adaptor A 1199 should be used.
RCD functions
Parameters set in one function are also kept for other RCD functions!
The measurement of contact voltage does not normally trip an RCD. However, the trip
limit of the RCD may be exceeded as a result of leakage current flowing to the PE
protective conductor or a capacitive connection between L and PE conductors.
The RCD trip-lock sub-function (function selector in LOOP position) takes longer to
complete but offers much better accuracy of fault loop resistance (in comparison to the
R
L
sub-result in Contact voltage function).
RCD trip-out time and RCD trip-out current measurements will only be performed if the
contact voltage in the pre-test at nominal differential current is lower than the set contact
voltage limit!
The auto-test sequence (RCD AUTO function) stops when trip-out time is out of
allowable time period.
Z-LOOP
The low limit prospective short-circuit current value depends on fuse type, fuse current
rating, fuse trip-out time and impedance scaling factor.
The specified accuracy of tested parameters is valid only if the mains voltage is stable
during the measurement.
Fault loop impedance measurements will trip an RCD.
The measurement of fault loop impedance using trip-lock function does not normally trip
an RCD. However, the trip limit may be exceeded if a leakage current flows to the PE
protective conductor or if there is a capacitive connection between L and PE conductors.
Z-LINE / Voltage drop
In case of measurement of Z
Line-Line
with the instrument test leads PE and N connected
together the instrument will display a warning of dangerous PE voltage. The
measurement will be performed anyway.
Specified accuracy of tested parameters is valid only if mains voltage is stable during the
measurement.
L and N test terminals are reversed automatically according to detected terminal voltage
(except in UK version).
Power / Harmonics / Current
